Trying to add muscle to a 3d skeleton model
Looks like your model is having some issues with normals and so on. This is because .Obj models are not always being imported correctly. X-Muscle System is designed to work with armatures mostly. It is possible to connect muscles directly to geometry however you will lose many advantages and automation when using this method. All you have to do is to parent muscle's both tendons to according bone. Keep in mind all dinosaur's geometry bones have to be in hierarchy, parented to each other. I hope this helps!